Mahogany. Developed over countless hours DR. ARM armrests can help you get the correct position for your arm and hand with a lot more comfort and control. Easy to fit and constructed of the best material and finish it will also make an attractive addition to your mandolin. Play left handed mandolin? Dr. Arm works for you too! The included hardware will fit mandolins with depths from 1 5/8″ to 2 inches. Please measure your mandolin before you complete your order. NATURAL HANDMADE WOOD ARMREST WITH NATURAL WAX OIL FINISH. Made in the Slovak Republic, Europe. Kit included: armrest, hardware (mounting kit) and instructions how to install.